<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>页面未找到 - 404错误</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background-color: #f8f9fa;
            color: #333;
            padding: 20px;
            text-align: center;
        }
        
        .error-container {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .error-number {
            font-size: 12rem;
            font-weight: 700;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1;
            margin-bottom: 20px;
            position: relative;
        }
        
        .error-number::after {
            content: '';
            position: absolute;
            width: 60%;
            height: 15px;
            background-color: rgba(118, 75, 162, 0.1);
            bottom: 20px;
            left: 20%;
            border-radius: 50%;
            z-index: -1;
        }
        
        h1 {
            font-size: 2.5rem;
            margin-bottom: 15px;
            color: #2d3436;
        }
        
        p {
            font-size: 1.1rem;
            color: #636e72;
            margin-bottom: 30px;
            line-height: 1.6;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 30px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
            border: none;
            cursor: pointer;
        }
        
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        }
        
        .home-link {
            margin-top: 40px;
            color: #667eea;
            text-decoration: none;
            font-size: 0.95rem;
            transition: color 0.3s ease;
        }
        
        .home-link:hover {
            color: #764ba2;
            text-decoration: underline;
        }
        
        .footer {
            margin-top: 60px;
            color: #b2bec3;
            font-size: 0.9rem;
        }
        
        @media (max-width: 768px) {
            .error-number {
                font-size: 8rem;
            }
            
            h1 {
                font-size: 2rem;
            }
            
            p {
                font-size: 1rem;
            }
        }
    </style>
</head>
<body>
    <div class="error-container">
        <div class="error-number">404</div>
        <h1>页面未找到</h1>
        <p>抱歉，您访问的页面不存在、已被删除或暂时无法访问。<br>可能是网址输入错误或页面已移动。</p>
        <a href="#" class="btn">返回首页</a>
        <a href="#" class="home-link">或者联系网站管理员获取帮助</a>
    </div>
    <div class="footer">
    </div>
</body>
</html>
